Specify array_filter callbacks

Author: ondrejmirtes

src/Reflection/ConstantNameHelper.php

@@ -19,7 +19,7 @@ public static function normalize(string $name): string
 			return $name;
 		}
 
-		$nameParts = array_filter(explode('\\', $name));
+		$nameParts = array_filter(explode('\\', $name), static fn ($part) => $part !== '');
 		return strtolower(implode('\\', array_slice($nameParts, 0, -1))) . '\\' . end($nameParts);
 	}
 

src/Rules/Functions/InvalidLexicalVariablesInClosureUseRule.php

@@ -42,7 +42,7 @@ static function (Node\Param $param) {
 				return $param->var->name;
 			},
 			$node->getParams(),
-		));
+		), static fn ($name) => $name !== false);
 
 		foreach ($node->uses as $use) {
 			if (!is_string($use->var->name)) {